Garmin GPSMAP 521/521s Accessories

All of the Garmin GPSMAP 521/521s accessories marked as 'in stock' are available today and can be delivered as quickly as the next working day delivery when you choose our Next Working Day Delivery at £9.99. If there is no urgency when you receive your order we offer FREE UK delivery on all orders of £40 or more (delivered typically 3-5 workings days). We also deliver right around the world, prices start from £14.99. please see the basket pages or delivery page for more information.

Add a second mounting station for your 5-inch Garmin GPSMAP 521 or GPSMAP 521s chartplotter on your boat with this second mounting station. The kit also includes a wiring harness to power the GPSMAP 521/521s and ability to connect to an optional NMEA 0183 network, CANet device and transducer. More Details

Power or connect your Garmin GPSMAP 521 chartplotter to a network with this power/data cable.

IMPORTANT: This cable is for GPSMAP 521 models WITHOUT a sounder, if you have a GPSMAP 521s model with sounder and require a cable with sounder/transducer connectivity you need to buy the accessory below. More Details

If you are wanting to use your Garmin GPSMAP 521/521s on a boat, you will need this remote marine GA 38 GPS/GLONASS antenna to receive GPS/GLONASS signal. Comes with 10metre (32feet) antenna cable. The kit also includes surface, pole and under-deck (for the underside of fiberglass decks) mounting brackets. More Details

Garmin GPSMAP 521/521s GA 38 GPS/GLONASS Antenna - £49.99

Adding a Transducer to your GPSMAP 521s

Garmin transducers are fully compatible with the Garmin GPSMAP 521s and will provide you with a live 'view' beneath your boat. We stock the very latest Garmin transducers which can provide you with an image of not only what lies directly below but towards the front or sides of your boat with features such as SideVu, DownVu and RealVu 3D Forward.

To learn more about Garmin transducers please see our Garmin Transducer Buyer's Guide, the page also features an online form, which after completing we will email you a link to compatible transducers that are all fully compatible with your Garmin GPSMAP 521s and the boat in which you will use both nautical devices on.

Adding a Garmin BlueChart to your GPSMAP 521/521s

By adding either a Garmin BlueChart g3 or g3 Vision marine chart on SD/microSD card to your Garmin GPSMAP 521/521s chartplotter will provide the detailed digital marine charts on the screen of your device.

Garmin BlueChart g3 Vision marine charts are available in three different sizes, these are: Small, Regular and Large coverage. Please see the sample charts below, which all include the Thames Estuary:

The larger the chart coverage the more area is covered without the need to change or buy additional charts. We suggest buying the chart(s) that provide the coverage for your sailing, fishing or yachting needs.

Charts are available to buy from ActiveGPS for the waters around the UK, Western Europe, Mediterranean and North American coasts. Find your Garmin BlueChart.

Why buy from us?

We are official Authorised Internet Retailers for Garmin. We sell genuine Garmin products, accessories and maps. We purchase from assigned Garmin UK distributors. We do not buy on the grey market and we do not sell counterfeit products. You can rest assured that by purchasing from ActiveGPS you will receive the full support of Garmin.

Page last updated: 25th February 2019

Deliveries

We offer UK, Europe and Worldwide deliveries. We despatch orders at 5.30pm on Monday, Tuesday, Wednesday, Thursday and Friday. We need to receive your order on those days by 4.30pm. When possible we may despatch orders received after that time. No orders are despatched after 5.30pm and no orders are despatched on Saturday or Sunday.

We offer FREE UK delivery on all orders of £40.00 or more, plus next working day and guaranteed Saturday delivery options. Click here for further info. All options also appear at the basket pages.